Package for a core-less coil



Sept. 13, 1966 A. KUTLOW 3,272,326

PACKAGE FOR A CORE-LESS COIL Filed Aug. 24, 1965 INVENTOR, ARTHUR KUTLOW ATTORNEY United States Patent 3,272,326 PACKAGE FOR A CORE-LESS COIL Arthur Kutlow, Forest Hills, N.Y. (38 Manchester Way, Pine Brook, NJ.) Filed Aug. 24, 1965, Ser. No. 482,067 1 Claim. (Cl. 20652) This invention relates generally to packaging, and is especially concerned with a unique package for coils, such as coils of strip material, wire, and other coiled material.

It is an important object of the present invention to provide an extremely simple coil package Which effectively protects the packaged coil from damage, causes the coiled material to remain properly coiled without the need for strapping, tying, and the like, and may further provide a neat and convenient dispenser for removing any desired quantity of the coiled material.

It is a further object of the present invention to provide a coil package of the type described which is extremely economical to produce, and capable of being formed in conjunction with the coiling procedure to substantially eliminate a separate packaging operation,

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

In the drawings:

FIGURE 1 is a plan view showing a blank for use in the coil package of the present invention;

FIGURE 2 is a perspective view showing a coil package constructed in accordance with the teachings of the present invention; and

FIGURE 3 is a sectional View taken generally along the line 3-3 of FIGURE 2.

Referring now more particularly to the drawings, and specifically to FIGURE 1 thereof, the blank there illustrated is generally designated and may advantageously be fabricated of a single sheet of paperboard, corrugated stock or other suitable sheet material.

The blank 10 includes a generally rectangular back panel 11 which may have generally parallel, opposite longitudinal or side edges 12. The back panel 11 may be formed with a central array of thru apertures 13, and a center hole 14, for a purpose appearing presently.

Extending from opposite ends of the back panel 11 are a pair of generally rectangular end panels 15. The end panels 15 are each hingedly connected, as by fold lines 16, to respective opposite ends of the back panel 11, and are of rectangular configuration, each having a length substantially equal to the distance between back-panel side edges 12. Opposite ends of each end panel 15 may be defined by a pair of generally parallel edges 17, which edges are respectively in alignment with and extensions of backpanel edges 12.

Extending from each end panel 15, hingedly connected thereto and extending away from the back panel 11 is a front panel 19. The front panels 19 may each taper or converge in the direction away from the adjacent end panel 15, being hingedly connected to the latter by a respective fold line 20, parallel to the adjacent fold line 16.

The end panels 15 are each formed in a region spaced medially between the edges 17, and extending between the folds 16 and 20, with a generally rectangular thru opening or cutout 21. Further, one end panel 15 may be provided with a cut or slot 18 extending between and normal to the fold lines 16 land 20. An additional cut or slit 22 may extend normal to the slot 18.

Extending from the outer, reduced end of each front panel 19 is a generally rectangular extension 23, hingedly connected to the adjacent front panel by a fold line 24 generally parallel to the fold lines 16 and 20. A flap 25 extends from the outer end of one extension panel 23,

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the righthand panel 23 as seen in FIGURE 1, the flap 25 being generally circular, except for its chordal connection by fold line 26 to the adjacent extension panel 23. An additional flap 27 extends from the outer side of and is hingedly connected to the other extension panel 23, as by fold line 28. The flap 27 is also of generally circular configuration, but chordally mutili-ated by its connection fold 28, and also by a chordal outer edge 29 parallel to the connection fold 28.

In the assembled packages of FIGURES 2 and 3 there is shown a coil 30, which is of strip material and provided with a central thru opening 31. However, the coil may be of any material, as desired.

The coil package of FIGURES 2 and 3 illustrates a coil 30 arranged having one side in facing engagement with the back panel 11 and arranged centrally thereof. The end panels 15 have been folded about their hinged connections 16 to extend forwardly to the front side of the coil 30, with the end-panel openings 21 each conformably receiving an opposite peripheral portion 32 of the coil. It is not essential that the openings 21 receive the peripheral coil portions, as the coil may be of diameter less than the dimension of panel 11. From the forward edges of the end panels 15, as defined by the fold lines 20, the front panels 19 extend inwardly in facing engagement with the front side of the coil 30 toward each other and terminate short of each other over the central coil opening 31. The extension panels 23 are folded along fold lines 24 into the central coil opening 31, at opposite sides thereof, and the flap 25 is folded along its fold line 26 to lie concentrically within the coil opening 31 in facing engagement with the front surface of back panel 11. The flap 27 is folded on its adjacent fold line 28 to lie in facing engagement with the front side of the flap 25, with the flap edge 29 proximate to the extension panel 23 of flap 25. The circular configurations of flaps 25 and 27 may be substantially identical to that of central coil opening 31. Viewed otherwise, the radius of flaps 25 and 27 may be substantially equal to that of central coil opening 31, so that extension panels 23 are disposed generally chordally within the central coil opening to positively locate the coil. Any suitable fastener means may be employed to secure the flaps 25 and 27 in facing engagement with each other and with the back panel 11, such as staples 35.

In formation of the package of FIGURES 2 and 3, the blank 11 of FIGURE 1 may be engaged on a spool about which the coil 30 is subsequently wound. For example, the holes 13 and/or 14 centrally of back panel 11 serve to receive the prongs of a spool. With the blank 10 on a spool, the coil 30 may then be wound on the spool, and the end panels 15 and front panels 19 folded about the coil 30 while still on the spool. In this condition, the conformably received peripheral coil portions 32 serve to locate the coil relative to the blank 10 for removal of the coil with the blank, and subsequent fastening of the flap means 25 and 27 to the back panel 11.

In use, the coil end portion 33 may be passed thru the slot 18, as in FIGURE 2. The end portion 33 may then be drawn or extended, passing slidably through slot 18, as the coil rotates about the flap means 23, 25 and 27, which means provides a core rotatably supporting the coil. In this manner, the package serves to dispense the coiled material.

Altern-ately the end portion 33 may be withdrawn from the slot 18 and the desired length of material unwound and separated from the coil. The resulting end portion may then be re-inserted and retained in slot 18.

It will be observed that the panels 19 are each slit, as at 34, extending inwardly from cutout 21. This affords a yieldability permitting swinging of the panels over larger coils 30, say having a diameter greater than the length of panel 11.

From the foregoing, it is seen that the present invention provides a coil package which fully accomplishes its intended objects and is well adapted to meet practical conditions of manufacture, storage, shipment and use.

Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within the spirit of the invention and scope of the appended claim.

What is claimed is:

A coil package comprising a generally rectangular back panel, said back panel having central thru holes for removable mounting on a coil-winding machine, a centrally open coil having one side in facing engagement with the front of said back panel and projecting diametrically beyond opposite ends of said back panel, a pair of end panels hingedly connected to opposite ends of said back panel and each having a medial thru opening, said end panels extending forwardly from said back panel beyond said coil and receiving respective projecting coil portions in said medial openings, one of said end panels having a slot, the free end of said coil passing outwardly through the medial opening of said one end panel and inwardly through said slot, a pair of front panels hingedly connected to the forward edges of respective end panels and extending inwardly toward and terminating short of each other at opposite sides of the central coil opening, said front panels each having a cut opening through its outer edge to the adjacent medial opening for passage of said front panels over the projecting coil portions upon inward swinging of the end and front panels, an extension panel hingedly connected to the inner end of each front panel extending rearwardly into the central opening of said coil at opposite sides thereof toward said back panel, said extensions each extending chordally across said central coil opening, a flap on the rear end of each extension lying in facing engagement with each other and said back panel extending across and closing said holes, said flaps having circular edge contours concentric with said coil to rotatably support the latter, and fastener means securing said flaps to said back panel in said concentric relation and closing said holes.

References Cited by the Examiner UNITED STATES PATENTS 1,112,062 9/ 1914 Gardner 20652 1,901,036 3/1933 Kinkead 206-52 2,275,424 3/ 1942 Freedman.

2,327,156 8/ 1943 Scott.

3,013,653 12/1961 Hedin 20652 3,145,823 8/ 1964 Spradlin 20659 X FOREIGN PATENTS 511,123 3/1955 Canada.

THERON E. CONDON, Primary Examiner.

J. M. CASKIE, Assistant Examiner. 

